Organo phosphonium salts

ABSTRACT

ORGANO PHOSPHONIUM SALTS OF THE FORMULA:   (A) (R1R2R3PCH2CHQ)*X* ARE PREPARED BY REACTING COMPOUNDS OF THE FORMULAE:   (I) R1R2R3PCH2CH2OY.X   OR   (II) R1R2R3PCH=CH2.X   WITH H-Q WHEREIN: X IS HALOGEN, Y IS THE RESIDUE OF AN ACYLATING AGENT, AND Q IS THE RESIDUE OF A REACTANT HAVING AN ELECTRONEGATIVE GROUP AND PROVIDING A REPLACEABLE HYDROGEN ATOM (H) WHICH IS REPLACED BY THE   R1R2R3PCH2CH-   GROUP OF COMPOUNDS I OR II FORMING THE COMPOUND A.

United States Patent 4 ABSTRACT" OF THE DISCLOSURE "Qrgano phosphoniiun salts of the formula: (A l. rn n n rcn cn m x preparediby reacting compounds of the formulae:

with wherein: X is halogen, Y is the residue of an acylating agent, and Q is the residue of a reactant having an electronegative group and providing a replaceable hydrogen atom .(H) which is replaced by the 'groupof compounds I or II in forming the compound A. H ;-\I

F isa division of copending application Ser. No. 811,628, ,tfiled Nov. 17, 1969 now Pat. No. 3,689,601, which was a continuation of application Ser. No. 674,107, filed Oct 10, 1967, now abandoned, which was a continuation, of application Ser. No. 292,123, filed July 1, 1963, now abandoned. 1

[fire-present invention relates to organophosphorus compounds and to a method of preparing same. More particularly, the instant discovery concerns phosphonium salt derivatives of tertiary'phosphines.

It has been found that tertiary phosphines generally will reactwith halo-substituted ethanol to produce the corresponding trialkyl-, tricycIoalkyl-, or tri-aryl- 2-hydrpxyethylphosphonium salts. In turn, these salts may be acylated using a lower alkanoic anhydride, lower alkacid,-,or the like, to produce their corresponding trialkyl-,,tricycloalkyl, or triaryl- Z-acetoxyethylphosphogrunt-salts.

:- ,The following equations illustrate this general reaction:

estenlying agent.

R ,R ,R each representing, as will be seen hereinafter,

' alkyl, cycloalkyl and aryl,

X representing halogen or tetraphenyl borate, and Y representing the residue of an acylating or esterifying "ice agent. The following is a typical embodiment of generic equations (A) and (B), above;

69 ll 6 (ll-(hHohP CHzCH2O C GE s-Bl The trialkyl-, tricycloalkyl-, and triaryl- 2-acetoxyethylphosphonium salts prepared as above may, in turn, be converted to their corresponding vinylphosphonium salts according to the following general equation:

in which R R R Y and X are the same as above.

The following is a typical embodiment of equation (C), above:

e H 9 N11200:; G9 6 (CHDiPCHaCILOCCHyCl (CHmPcH=cH,-ci

More specifically, in generic equations (A), -(B) and (C), above R R and R each represent alkyl C -C substituted alkyl C C cycloalkyl, and aryl; X represents halogen, such as bromo, chloro and iodo, and tetraphenyl borate; and Y in equations (B) and (C) represents the residue of an acylating agent as shown in the specific embodiments, supra.

Typical tertiary phosphine reactants are the following: trimethylphosphine, triethylphosphine, tripropylphosphine, tributylphosphine, tripentylphosphine, trihexylphosphine, triheptylphosphine, trioctylphosphine, trinonylphosphine, tridecylphosphine, triundecylphosphine, tridodecylphosphine, tritridecylphosphine, tritetradecylphosphine, tripentadecylphosphine, trihexadecylphosphine, dodecyldiethylphosphine, dioctylpropylphosphine, diethylbutylphosphine, butylethylhexylphosphine, tri(2-methoxypentyl) hosphine, tris-2-cyanoethylphosphine, diethyl-2- ethoxyheptylphosphine, tricyclopropylphosphine, tricyclohexylphosphine, triphenylphosphine, diphenylnaphthylphosphine, trixylylphosphine, tritolylphosphine, tris(paraethoxyphenyl)phosphine, tris(para chl0r0phenyl)phosphine, tris(2-chlorophenyl)phosphine, tris(3-bron1ophenyl)phosphine, and the like.

Typical esterifying agents follow: lower alkanoic anhydrides, such as acetic anhydride, propionic anhydride, butanoic anhydride; lower alkanoic acids, such as formic acid, acetic acid, propionic acid, butanoic acid; acylating (C C alkanoyl) halides, such as acetyl chloride, propionyl bromide, butyryl iodide, octanoyl chloride, dodeQ- anoyl bromide, stearyl chloride, hexanoyl bromide; isopropenyl acetate; aryl sulfonyl halides, such as paratoluenesulfonyl chloride, phenyl sulfonyl bromide, 2,4-dimethylphenylsulfonyl chloride; alkyl (lower) chloroformates, such as ethylchloroformate, butylchloroformate; alkyl (lower) carbonates, such as diethylcarbonate, dipropylcarbonate, dibutylcarbonate; ketene; dimethyl sulfate; nitrosyl chloride; and trimethyl phosphate.

In equation (C), above, typical suitable inorganic and organic bases are: alkali metal hydroxides, such as sodium hydroxide, potassium hydroxide, lithium hydroxide; alkali metal carbonates, such as sodium carbonate, potassium carbonate, lithium carbonate; alkaline earth metal hydroxides, such as magnesium hydroxide, barium hy droxide, calcium hydroxide; alkaline. earth metalicarbone ates, such as magnesium carbonate, barium carbonate, calcium carbonate; activated alumina; and quaternary ammonium hydroxides, such as tetraalkyl (lower)ammonium hydroxides, including tetramethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabenzylammonium hydroxide; and basic ion exchange resins. 1

The reaction in equation (A) hereinabove is carried out at a temperature in the range of 30 C. to 250 C., preferably 60 C. to 180 C. The equation (B) reaction, above, is best carried out at a temperature in the range of 5 C. to 150 C. As to equation (C), above, this reaction is generally carried out at a temperature in the range of 20 C. to 180 C., preferably 50 C. to 150 C.

Each of these three reactions may be carried out at atmospheric, sub-atmospheric or super-atmospheric pressure; preferably, however, reaction is carried out at atmospheric pressure. By the same token, the ratio of the reactants in each of equations (A), (B) and (C) is not critical, an excess of either reactant, in each equation, with respect to the other being suitable. In equation (B), however, an excess of about by weight of the acylating agent relative to the phosphonium salt reactant is preferred. Generally in equations (A) and (C) stoichiometric amounts of the reactants are employed.

The reactions of equation (A), above, are best carried out in the presence of an inert organic solvent, i.e., a solvent which does not enter into or otherwise interfere with the reaction under the conditions contemplated herein. Typical solvents are dimethoxyethane, dioxane, ethylacetate, tetrahydrofuran, and the like.

'I'he'reactions of equation (B) similarly are best carried out in the presence of an inert organic solvent of the type described for equation (A), as well as acetic acid, dimethylformamide, diglyme, and the like.

As to equation (C), typical suitable inert organic solvents in which the phosphonium salt is solvent, which solvents do not interfere or enter into reaction to any substantial degree, are dimethoxyethane, dioxane, dimethylformamide, diglyrne, acetonitrile, ethylacetate, tetrahydrofuran, and other like linear and cyclic ethers, acetate esters (lower alkyl).

Alternatively, it has been found pursuant to the instant discovery that the products of equation (A), above, may be converted directly to the products of equation (C), thusly, (D)

in the presence of any base given above for equation (C) and at a temperature in the range of 100 C. to 250 C. As in equation (C), a solvent of the type given hereinabove for equation (C) is suitable and herein contemplated. If desired, the reaction may be carried out in the presence of a dehydrating agent, such as a siliceous agent including silica (e.g. silica gel), silica-alumina, and the like, in which the other inert organic solvents are also suitable, e.g. aromatic hydrocarbons, such as toluene, benzene, xylene, cymene, and the like, methylene chloride, ethylene chloride, etc.

The products of equations (A), (B), (C) and (D) above are useful as fire retardants in plastics, e.g., from 0.5 to 30 parts by weight of any one of above compounds when incorporated into 100 parts by weight of a thermoplastic polymer material, such as polyethylene, polypropylene, polystyrene, polyacrylate, polymethylmethacrylate, or the like, provides enhanced fire retardance to the polymer material upon exposure to an open flame.

While the following examples specify certain details as to certain embodiments of the present invention, it is not intended that these details impose unnecessary limitations upon the scope of the instant discovery, excepting of course that these limitations appear in the appended claims:

Typical are: polymeric quarternary ammonium salts, e.g., polymerlc triniethylbenzyl ammonium chloride, etc.

Tributyl-2-hydroxyethylphosphonium tetraphenylborate Tributyl 2 hydroxyethylphosphonium bromide, obtained from combining tributylphosphine and 2-bromoethanol in 1,2-dimethoxyethane and refluxing under nitrogen, is dissolved in water and treated with excess 0.1N sodium tetraphenylboron. The resulting precipitate is filtered and recrystallized from ethanol to yield product tributyl 2 hydroxyethylphosphonium tetraphenylborate with melting point 124 C.l25 C. Analysis of product (Found: C, 80.03; H, 9.00; P, 5.35. C H O requires: C, 80.55; H, 9.25; P, 5.47%.)

As is evident from this Example, the halide salts of Equation (A) may be converted, in situ or after recovery thereof, to the corresponding tetraphenylborate salts.

EXAMPLE I! Tributyl-2-acetoxyethylphosphonium bromide 1,2-Dimethoxyethane (275 milliliters), freshly distilled from calcium hydride, 2-bromoethanol (133 grams, 1106 moles), and tributylphosphine (204 grams, 1.01 moles) are combined under nitrogen and refluxed at C. over night with stirring. A heavy oil forms within an hour. Isopropenyl acetate (320 grams, 3.2 moles) and 48% HBr (3 drops) are slowly added to the reaction mixture which is then refluxed 18 hours. Volatile components are removed in vacuo at 70 C. Product (372.5 grams; 99.9% yield) remains as a thick hygroscopic oil, which could be forced to crystallized by stirring in a benzene-petroleum ether (boiling point 30 C.60 C.) mixture. Crystalline tributyl-2-acetoxyethylphosphonium salt is obtained from part of the oily product by freeze drying a benzene solution of the oil.

EXAMPLE III I Tributyl-2-acetoxyethylphosphonium tetraphenylborate Tributyl 2 acetoxyethylphosphonium.-bromide oil (16.2 grams produced as in Example II, above) is dissolved in water and treated with sodium tetraphenylboron (15 grams) dissolved in water. A white precipi tate appears which is filtered and recrystallized from ethanol containing enough acetonitrile' to'cause solution at the boiling point of the mixture. Tributyl-2-acetoxy ethylphosphonium tetraphenylborate (16.7 grams) isob tained with melting point of 177 C.--179 C. Analysis of product (Found: c, 76.65; H, 8.83; P, 5.24. (3, ,11, 0,13? requires: C, 78.93;H, 8.94; P, 5.10%.)

EXAMPLE IV Triphenyl-2-acetoxyethylphosphonium iodide 2-Iodoethyl acetate is prepared from the 'nucle'ophilic exchange reaction of sodium iodide and 2-chloroethylacetate in refluxing acetone under nitrogen (boiling point 86 C.90 C. at 33 milliliters mercury). Triphenylphos phine (7.35 grams) is reacted with 2-iodoethylace tate (24 grams) under nitrogen with stirring at 80 C; for 4.5 hours. The excess 2-iodoethylacetate is distilled off in vacuo. Crude, brown crystalline product (14.20 grams) is obtained by washing oily residue with ether. It is washed with ether, ethylacetate, and acetone and recrystallized from acetonitrile to give product (7.90 grams) with melting point 161 C.l63 C. Analysis of product (Found: C, 55.16; H, 4.80; I, 26.77; P, 6.45. C H O IP requires: C, 55.47; H, 4.66; I, 26.66; P, 6.51%.)

Example IV represents still another embodiment of the present invention wherein the product salts of Equation B, above, are prepared directly from the reaction of a 2-haloethyl acetate with a tertiary phosphine 0f the yp contemplated herein. 1 A

The process of Example 1V, above, may be carried out using any of the tertiary phosphine reactants contemplated herein and the corresponding tri-substituted 2- acetoxyethylphosphonium halide produced and recovered, according to the following equation listed hereinabove for equation (C). The reaction under equation (E), as shown in Example lV, supra, is best carried out under inert conditions, such as under nitrogen. Other Z-haloethyl acetate reactants contemplated herein are Z-bromoethyl acetate and 2chloroethyl acetate.

0 Tables A, B, C, D and E, which follow, correspond to (E) e 9 equations (A), (B), (C), (D) and (E), respectively. The

R R R P XCH2CH 1OC'CH3 R R R PCHZCHgOY-X examples in Tables A and B are carried out essentially a as in Examples I and II, respectively supra, excepting h l and Have the meanings E 10 of course as shown in Tables A and B. The examples in l f eqlfatwns Table C are carried out essentially as in Example LX,

ECW311011 2 best Gained out at a temperature infra, excepting of course as shown in Table C. Like the 8 5 lo 150 Preferably F l reflux wise, the products of Table D are recovered essentially as temperature of the Solvent p y Typical Inert in Example LX, infra. The examples in Table E are cargamc solvents contempla f r equa i n (E) are 15 ried out essentially as in Example 1V, supra, excepting tone, lower alkanol (ethanol, butanol), plus the solvents of course as shown in Table E.

Ex. Moles Moles Milliliters Temp,

No. R R R R R 'R P X XCI'IZCH-JOH Solvent of solvent C. Product V CH; CH: CH: 1 Br 1.0 DME L..- 1,500 2-hydroxycthyltrimeth l phosphonium bromide.

Vl n-C4Ha I1-C4H: n-Crl'lo 1 C1 1.0 DME 1,500 83 Z-hydroxyethyltri- 4 I butylphosphonium chl0ride.'

VIII n-C4H n-C H9 IIC!}IQ 1 I 1.2 do 2,000 101 2-hydroxyethyltributylphosphonium iodine.

i-C4H i-CJI, 1 Cl 0. Ethyl 1.800 50 2-hydroxyethyltriism acct ate. butylphospl onium M chloride. n-CaH n-cgnn 1 C1 1.1 DME.-. 1,700 83 Z-hydroxycthyltrioctylphosnhonium chloride. n-CnHg-s BCl2Hg5 1 G1 1.1 DME 1,700 83 2-hydroxyethyltridodecylphosphonlum chloride.

XII.-- Clans: C aHu C el-I33 1 C1 1.3 THF 1,6(10 30 Z-hydroxyethyltrihexadccylphosphoninm chloride.

XITL.-- C,H CgHs 01H: 1 Cl 1.0 Dioxane-.. 1,700 200 Q-hydroxyethyltriethylphosphonium chloride.

XIV C Hg CzH; CqHn 1 Cl 1.1 Ethyl 2,000 45 2-hydroxyethylbutylacetate. ethylhexylpl1osphonium chloride. XV 02H; 01H; I 1 Cl 1.2 Dionne". 1,800 2-hydroxyethyldl- 7 CH: ethyl-2-ethoxyl ethylphosphonlum CzH;O-CH chloride.

XVI r 1 Br 1.3 DME 1,600 -60 2-hydroxyethyltricyclohexylphosphonium bromide.

XVH 1 Cl 0.9 DME. 2,000 Q-hydroxyethyltri- A cyclopentylphos' t phonium chloride.

XVIII 1 I 1.1 Dioxane-.- 1,500 2-hydroxyethyldiphenylnaphthylphosphonium iodide.

XIX-. 1 I 1.0 Dioxaue... 2,000 101 2-hydroxyethyltriphenylphosphonium iodlde.- v

XX I 1 C1 1.2 Ethyl 1,600 65 Z-hydroxyethylacetate. tri(para-chloro-' pheuyl) phosphonium chloride.

c1 c1 c1 XXL... 1 01 1.3 DME 1,700 83 2-hydroxyethyltri(para-tolyl)- phosphonium chloride.

CH; CH; CH;

1 DME Dimethoxyethane. TH F =tetrahydrofuran.

TABLE B 63 9 Q9 6 R R R 1CHzCI-I2OH-X+A R R R PCII CIIZOY-X Pfroduct Moles example 69 6 Moles emp., Example No. No. R]? CHzCHzOH-X A A Solvent (mL) C. Product XII V 2.0 Isopropenyl 3.2 DME, 300 83 2-acetoxyethyltn'methyl phosphonlum bromide.

acetate. XXIII VI 1.0 Dimlezthyl 3.8 Dioxane, 300 90 2-methylsulfatoethyltributylphosphonium su ate. c ori e. XXIV VII 0.8 Acetlilc d d 1.0 Acetic acid, 300... 120 lacetoxyethyltributyl phosphonium chloride.

an y n e. 4 XXV VIII 0.0 Nifiosy 1.1 Diglyme 120 finitroethyltributylphosphoniumlodido.

C I on e. XXVI IX 1.0 ceitl d 1.2 DME,50O 30 2aoetoxyethyltriisobutylphosphonium chloride. c 1 on e. I XXVII XI 1.0 p-Tolucnesul- 1.0 DME, 200 60 2(p-toluenesulfonyloxy)ethyltridodecylphos- Ionyl phonium chloride. chloride. XXVIII XIII 1. 0 Trimethyl 1. 1 Acetic acid 500---- 80 2-dimethylphosphatoethyltriethyl phosphonium phosphate. chloride. XXIX XII 1.0 Proipionio 2.4 DMF, 300 ilfiroponyloxycthyltrihexadecylphosphonium ac: c on e. XXX XIV 1.0 Butanoic 1.0 DMF, 1000 2-butyryloxyethylbutylcthylhexylphosphonium anhydride. chloride. XXXI XV 0.8 Acetic acid 4.0 None 118 2 ecetoxgethgldiethyl-Z-ethoxyethylphosphonmine on e. XXXII XVI 0.9 Acetyl 1.0 DME, 200 65 2-acetcxyethyltiicylcohexylphosphcnium chloride. bromide. XXXIII XVII 1.0 Hexanoyl 1.9 Dioxanc, 150 25 2-hexanoyloxyethyltricyclopentylphosphonchloride. ium chloride. XXXIV XIX 1.0 Acetlilc d d 6.0 None 100 2-acetoxyethyltriphenyl phosphonium iodide.

on y n e. XXXV XVIII 1.1 Stearyl 3.3 DME, 700 2-stearyloxyethyldiphenylnaphthylphosphonchloride. iumiodid XXXVI XX 1. 0 Dodecanoyl 4.0 DMF, 1,000 40 2-dodecanoyloxyethyltri(parachlorophenyl)- bromide. phosphonium chlori e. XXXVII XXI 1.0 Phenylsul- 1.0 Dioxane, 600 1L(phenylsulfonyloxy)ethyltrl(pera-tolyl)phosfonyl phonium chloride. bromide. XXXVIII V 1.0 Ethylchloro- 2.0 Diglyme, 300 40 2-(ethoxycarhonyloxy)ethyltrimethyl phosformate. phonium bromide. XXXIX VII 0.9 Dipropyl 100 2-(propoxycarbonyloxy)ethyltrlbutylphosphoncarbonate. ium chloride. XL V1! 1.0 Ketene 2-acetoxyethyltributylphosphonium chloride.

l DMF Dimethylformamide.

TABLE C Q 9 R R R PCH=CH X Product of Example example (B G Moles Solvent Temp., No. No. RIURPCILCHfiY-X Base olbase (ml.) C. Product XLI XXII 1.0 1.0 DME,300 83 vigylrtgiimethylphosphonium to e. XLII XXIII 1.0 2.0 Dioxane,300 100 Virgltrlbutylphosphonium c on e. XLIII XXIV 1.0 4.0 Eglgglacetate, Do. XLIV XXV 2.0 8.0 Digly me 10o Viiugtrihutylphosphonium o e. XLV XXVI 0.5 1.0 Acetonitrile, 80 Vinyltriisobutylphosphonium .500. chloride. XLVI XXVII 0.9 1.1 THF,600 60 vhfiylltrliodecylphosphonium c on e. XLVII XXVIII 1.0 Polymeric trlmethyl- 4.0 DME, 400-.- Vlnyltriethylphosphonium benzyl ammonium chloride. chloride. XLVIII XXIX 1.0 KOH 1.0 THF Vinyltrihexadecylphosphonlum c on e. XLIX XXX 1.0 NaOH 1.0 Acetonitrile 20 Vinylbutylethylhexylphosphonium chloride. L XXXI 1.0 LlOH 1.0 .dO 60 Vinyldiethyl-Z-ethoxyethylphosphonium chloride. LI XXXII 1.0 Mg(OH)2 3.0 THF 72 Vigyltrigyclohexylphosphonium rorm e. LII XXXIII 2.0 Ca(C0;) 1.0 Dioxane Vlrgltrigyclopentylphosphonium c on e. LIII XXXIV 0.5 Ba(CO;) 1.0 DME 81 Vinltgiphenylphosphonium 1o 1 e. LIV XXXV 3.0 Polymeric triethyl- 1.0 Dloxane 97 Vinylphenylnaphthylhenzyl ammonium phosphonium iodide. hydroxide. LV XXXVI 1.0 .do 5.0 DME 50 Vinyltri(para-chlorophenyD- phosphonlurn chloride. LVI XXXVII 1.0 Activated alumina 1.0 THE 35 Virgiltri(para-tolyDphosphoninm c on e. LVII XXXVIII 1.0 Tetramethylammo- 1.7 Diglyme 42 Vlnyltrimethylphosphonium nium hydroxide. bromide. LVIIL- XXXIX 2. 0 Tetrapropylammo- 1.0 DMF 37 Vinyltributylphosphonium nium hydroxide. chloride. LIX XL 1.0 'Ietrabenzylarnmo- 1.0 DME 25 Do.

nium hydroxide.

1 When not specified the amount. of solvent employed is 500 milliliters.

TAB LE D 63 6 base (B 6 R R R PCHzCHeH-X R R R PCH=CHz-X Product of Example Example Temp, Dehydrating 500 milliliters No. N 0. Base agent of solvent Product NazCO; 120 Silica gel 1 DME Vinyltribntylphosphonium chloride. Ca(0 HM 100 Silica-alumina 2 DM E Vinyltridodecylphosphonium chloride. LizC O 220 THF Vinyltrihexadecylphosphonium chloride. LiOH 180 Siliea-alumina Dioxane- Vinyldiethyl 2ethoxycthylphosphonouim chloride. Mg(OH)1 150 Silica gel 1 DME "inyltricyclohexylphosphoniurn bromide. N51200: Dioxane Vinyldiphenylnaphthylphosphonium iodide. BaCO; Vinyltriphenylphosphonium iodide. NazCO; Vinyltri(para-chlorophenyl)phosphonlum chloride. Actlivated Vinyltri(para-tolyDphosphonium chloride.

a ununa.

1 Finely-divided particulates. 1 Finely-divided particulates.

i TABLE E r" Example ll Temp, No. R1R1R1P plus XCHzCHzO CCH= C. Solvent Product 10. 'Iridodecylphosphine. X=Br Refiux Ethanol Trlidodcciylfl-acetoxyethylphosphonium v )ronu e. 11.5; Tricyclohexylphosphine X=I 85 Acetonitrile Trieyclohtargl-Q-acetoxyethylphosphoruum l0 1 (3. l2 Tris(2-chlorophenyl)phosphine X=Cl Refiux.. Acetone 'Iris(Z-chlorophenyl)-2-acetoxyethylg phosphonium chloride. 13 Y.- TrisQ-methoxypentyl)phosphine X=I 50 Dioxane 2 at-etoxyethylphosphonium iodide.

By finely-dividedrparticulates in Table (D) is intended in which (a) is 0 or 1 and R is the same as above; 28 to 2Q 0 mesh. Larger or smaller particulates are like- H wise within the purview of the instant discovery. H l

" e A EXAMPLE LX Tributylvinylphosphonium bromide Tributyl 2 acetoxyethylphosphonium bromide (23.7 millimoles) is dissolved in l,2-dimethoxyethane (25 milliliters) and sodium carbonate (5.0 grams, 47 millimoles) naphthene;

is added. The mixture is stirred at reflux under nitrogen for 8 hours. The solid is filtered off and washed with hot 1,2 3 dimethoxyethane. The combined filtrates are evaporated to leave a semi-solid residue. Recrystallization from ethyl acetate yields product tributylvinylphosphonium bromide (3.3 grams, 10.7 millimoles, yield with melting point 148" C.l C.). Further recrystallization from ethylacetate-acetonitrile raises the melting point to 151.5 C. to

Pursuant to the present discovery, the products of Tables B,".C, D and E, above, may be reacted with reactants containing an electronegative group and an active hydrogen (i.e., a readily replaceable hydrogen atom) to produce the corresponding organophosphorus derivatives. Typical such reactants are: esters of the formula:

i H C(CO zR")z in which Z is hydrogen, alkyl C -C and cycloalkyl, and R is lower alkyl;

in which R" and R" each represent lower alkyl and R represents hydrogen or lower alkyl; secondary phosphines and phosphine oxides of the formula (0)8 HP-R' in which (a) is O or 1 and R is the same as above;

R HP saturated and unsaturated, substituted and unsubstituted cycloaliphatic ketone, such as 2,4-dimethylcyclopentanone, 2,4-dimethylcyclopentene-l-one, isophorone, and the like; indene, nitroor hydroxy-substituted indene; fiuorene, nitroor hydroxy-substituted fiuorene, and other like reactants having an electronegative group and an active hydrogen.

The product salts of this reaction have the following general formula wherein R R R and X have the meanings given herein-before and Q is the residue of a reactant of the type described just above, which reactants contain a replaceable hydrogen which has been replaced and the residue is identified as Q, the active hydrogen having been replaced by R R R PCH CH For example:

Z! 69 e I (C H9):PCH=CHz-C1 H--|CNO1 z to e 4 Q);PCHzCHz(IJ-NOZ Cl malonate and five drops of a 10% aqueous sodium hydroxide solution. The reaction mixture is heated at l30 5 50 ,E BEQE3BV 6 o 8 win zo mo o 3 3: 325 5E Z n 6 .L a n mono; mo m mo bsn mo z 3 s fi z Q; 6 50zvlfi ovmofioiomgidz a 55 Amozm 3 -emdzoz 3 H 6 zozfiofio mom emfiz 8 .....S52Q 2 35: 0 5052 o m gmzoov65052250: ma E3 J zommo Z zfizoozmo 3 n\ 6 @2565QTAU OSQEQAT 5o fim o oovma e r 2 San mozmov 3 11.. 2 a m 6 hm o ooifiavQmofiom A O SVQ e B E5 mo z 3 mfi oovmqfi 3 J a Q 29 mo moEom zofio 3 SE 2: :3 3 2 o n I O v O mm SAD monw WHO moio mom mow mo e o 8 352 no; .2 o p 3. 1 6 I... H. r .H mm 35: 23 202539 3 eoezfi Z f 5 v V ioio; ..Q 8 was p2. w 3

F5 5333 552 3" F/x v3 EA H xx4 N503 333 ES 2rd 5333 553 4 2 5 3 and CS F5 is 559 x53 3 rfi3 17 18 or substituted phenyl in which the substituents are lower References Cited alkyl, lower alkoxy or halogen; X is halogen, a is zero UNITED STATES PATENTS or one and R' is lower alkyl or phenyl,

3,309,425 3/1967 Glllham et a1. 260606.5 F by reacting a phosphonlum salt having the formula 3,314,929 4/1967 Rauhut 260*606'5 F 3,422,149 1/1969 Rauhut et a1. 260-606.5F

R R R$0H=0Hz with a secondary phosphine or phosphine oxide of the DANIEL E. WYMAN, Primary Examiner formula A. P. DEMERS, Assistant Examiner RI! II US. Cl. X.R. HP

\ 26045.7 P, 45.95, 340.7, 462, 465 G, 465.1, 485 J, 488 R,

R 561 P, 586, 593, 606.5 P, 932, 968 

